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If the alarm duration is 2 minutes but the recording duration is 10 seconds, is the alarm-linked video duration 2 minutes or 10 seconds?

In continuous alarm reporting scenarios, the alarm-linked video duration is 10 seconds.

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During VM migration, a VM migrates from one server to another server. When the two servers connect to different switch ports, the VM does not send free ARPs but sends RARPs. Therefore, the switch refreshes MAC addresses to the new port and the packets refresh ARPs to the new port properly. Services are interrupted for some time. The 10 minutes duration is the ARP aging time of the original port. To avoid service interruption, you need to enable the MAC-ARP association function. In V100R006 and later versions, run the mac-address update arp command in system mode to enable this function. For details, see MAC Address-Triggered ARP Entry Update.

Why is the LDP GR duration in the log longer than 10 minutes, which is the interval of the MPLS Forwarding State Holding timer

After the GR restarter performs an active/standby switchover, LDP GR starts only after route GR is complete. The MPLS Forwarding State Holding timer is started immediately after the active/standby switchover but restarted when route GR is complete. In the log, the GR begin time is the time when the MPLS Forwarding State Holding timer is first started; the GR end time is the time when the MPLS Forwarding State Holding timer expires. Therefore, the LDP GR duration recorded in the log is the sum of the route GR duration and MPLS Forwarding State Holding timer interval (10 minutes).

How Long Is the Metric Data Retained?

Metric data includes original metric data and rollup metric data.

Original metric data is sample raw data and is retained for two days.
Rollup metric data is data aggregated based on original metric data. The retention durations for rollup metric data vary depending on the rollup period.
- Metric data whose rollup period is 5 minutes is retained for 10 days.
- Metric data whose rollup period is 20 minutes is retained for 20 days.
- Metric data whose rollup period is 1 hour is retained for 155 days.
- Metric data whose rollup period is 4 hours is retained for 300 days.
- Metric data whose rollup period is 1 day is retained for 5 years.

If a service instance is deleted, its metrics will be deleted one hour after its raw data is not reported.

What are the maximum size and duration of a U1900 recording file

The maximum size of a recording file is 256 KB. The maximum duration of a recording file is 30s.

How long can the CDRs of U1900 be saved?

1. The U1900 is connected to the CDR server. There is no time limit for saving CDRs. 2. The maximum numbers of CDRs that can be saved in the CDR pools of various U1900 models are listed as follows: U1981: 480,000 U1980: 240,000 U1911/U1960: 50,000 U1910/U1930: 30,000 3. When the usage of a CDR pool reaches 90%, policies can be configured to restrict the incoming and outgoing calls for some users to control the overall CDR generation speed (which is not restricted by default). 4. When the usage of a CDR pool reaches 100%, the device discards new CDRs or overwrites oldest CDRs according to the configured policies (discarding new CDRs by default).

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If the alarm duration is 2 minutes but the recording duration is 10 seconds, is the alarm-linked video duration 2 minutes or 10 seconds?

Other related questions:

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